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<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>18-常量.html</title>
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</body>
<script>
	console.log(1234);
	console.log(3.141592653);
	console.log(false);
	console.log(true);
	console.log("kuazhu");
</script>
</html>